Physical barriers are the most effective way to keep birds off. Wherever applied; physical barriers eliminate the ability to land and perch. Plastic Spikes install easily with Special Spike Adhesive, nails, screws or ties. Prevent birds from landing anywhere! Provides 100% protection on rooftops, ledges, fences, and more! Bird-X’s Plastic Bird Spikes are made of a durable polycarbonate material that won’t corrode or decay. Plastic Bird Spikes require zero maintenance, and provide total pest bird protection while maintaining facility aesthetics.